Hands across America May 25, 1986
There is a line in Chapter 5 of Mix Tapes and Stuff (link--http://www.amazon.com/Mix-Tapes-Stuff-JJ-Lair-ebook/dp/B00KFTKCKE) there is a line about Hands Across America.
What was that?
In May 1986, the country united to hold hands for charity. Participants donated to join the line. In the end, $34 million dollars was raised.
This clip tells the story. There are plenty of videos with celebrities and home video on YouTube. You can also find the official song there also.